Recognize that in a chemical reaction the mass of the reactants is equal to the mass of the products(Law of Conservation of Mass). 0807.9.11
Vocabulary
Reactant : A substance that enters into and is altered in the course of a chemical reaction.( The substance that reacts and a chemical reaction.)
Product : A substance obtained from another substance through chemical change.( The result of chemical change.)
Law of Conservation of Mass : A principle of classical physics stating that the total mass of a closed system is unchanged by interaction of its parts.(The mass of something is unchanged by interaction.)
An apple experiences gravitational fields directed towards every part of the Earth; however, the sum total of these many fields produces a single powerful gravitational field directed towards the Earth’s center
Questions:
1. When a log burns in a fire, the ashes have a much lower mass than the log. Explain
2. A solid has a mass of 35 g. When it is mixed with a solution, a chemical reaction occurs. If the final total mass of products is 85 g, what was the mass of the solution?
3. Solution A has a mass of 60 g. Solution B has a mass of 40 g. When they are mixed, a chemical reaction occurs in which gas is produced. If the mass of the final mixture is 85 g, what mass of gas was produced?
Recognize that in a chemical reaction the mass of the reactants is equal to the mass of the products(Law of Conservation of Mass). 0807.9.11
Vocabulary
Reactant : A substance that enters into and is altered in the course of a chemical reaction.( The substance that reacts and a chemical reaction.)
Product : A substance obtained from another substance through chemical change.( The result of chemical change.)
Law of Conservation of Mass : A principle of classical physics stating that the total mass of a closed system is unchanged by interaction of its parts.(The mass of something is unchanged by interaction.)
Links:
http://en.wikipedia.org/wiki/Law_of_Conservation_of_Mass
http://wiki.answers.com/Q/What_is_the_Law_of_Conservation_of_Masshttp://dictionary.reference.com/browse/law+of+conservation+of+mass
http://www.cartage.org.lb/en/themes/sciences/chemistry/generalchemistry/energy/lawofconservation/lawofconservation.htm
http://dictionary.reference.com/browse/law+of+conservation+of+mass
Weighing
Gravitational mass, Inertial mass, Quantum mass.
Spring scale.
Weighbridge
An apple experiences gravitational fields directed towards every part of the Earth; however, the sum total of these many fields produces a single powerful gravitational field directed towards the Earth’s center
Questions:
1. When a log burns in a fire, the ashes have a much lower mass than the log. Explain
2. A solid has a mass of 35 g. When it is mixed with a solution, a chemical reaction occurs. If the final total mass of products is 85 g, what was the mass of the solution?
3. Solution A has a mass of 60 g. Solution B has a mass of 40 g. When they are mixed, a chemical reaction occurs in which gas is produced. If the mass of the final mixture is 85 g, what mass of gas was produced?
4. What is the law of conservation of mass?
5. What is a product?